MRI-associated classification to evaluate the outcome after autologous reconstruction of the medial patellofemoral ligament: a preliminary study
- 304 Downloads
Purpose of this study was to establish and validate an MRI-associated classification to graduate postoperative results of MPFL reconstructions.
30 autologous MPFL reconstructions of 28 patients were evaluated by two independent raters using MRI. All grafts were assigned to a novel graduation system respecting the graft’s anchoring insertions, its MRI signal appearance, continuity and tension and the differentiation relating to the surrounding soft tissue.
All grafts could reliably be assigned to one of the subgroups by both raters. 86.6 % of the grafts could be classified A1 or B1, reflecting a correct positioning and a low to intermediate signal intensity. Only one graft had to be classified C3 (malpositioned, elongated).
We were able to establish and validate an MRI-associated classification to graduate the postoperative outcome after MPFL reconstructions. Foresighted, the presented classification might support further decision making in case of unsatisfying postoperative results.
KeywordsMPFL reconstructions MRI classification Postoperative outcome Signal appearance Tunnel positioning
Compliance with ethical standards
Conflict of interest
- 7.Smith TO, Donell S, Song F, Hing CB (2015) Surgical versus non-surgical interventions for treating patellar dislocation. Cochrane Database Syst Rev 2:CD0081Google Scholar
- 13.Mauch F, Steinbrück K (2002) Appearance of the patellar tendon graft and correlation with arthroscopy in sportsmen after ACL-reconstruction in lowfield MRI. Dtsch Z Sportmedizin 53(2):49–53Google Scholar
- 17.Fujimoto E, Sasashige Y, Masuda Y, Tsuchida Y, Hisatome T, Kashiwagi K, Sasaki H, Touten Y, Kazusa H, Eguchi A, Nagata Y (2014) Serial magnetic resonance imaging study of posterior cruciate ligament reconstruction or augmentation using hamstring tendons. Orthop Traumatol Surg Res 100(7):755–760CrossRefPubMedGoogle Scholar
- 22.Ma Y, Murawski CD, Rahnemai-Azar AA, Maldjian C, Lynch AD, Fu FH (2015) Graft maturity of the reconstructed anterior cruciate ligament 6 months postoperatively: a magnetic resonance imaging evaluation of quadriceps tendon with bone block and hamstring tendon autografts. Knee Surg Sports Traumatol Arthrosc 23(3):661–668CrossRefPubMedGoogle Scholar